The Government Accountability Office (GAO) makes recommendations to federal agencies on ways they can save taxpayer dollars. However, some of the larger agencies have yet to embrace 4,800 recommendations made by auditors, and the Department of Defense, which has failed to implement 1,004 such suggestions, has by far ignored the GAO the most.

One of the biggest defense programs the GAO has examined is the F-35 Joint Strike Fighter. The Pentagon, according to the GAO, did not adequately assess the affordability of the plane, which has had severe teething problems as it has moved into service.

The GAO has been credited with helping the government save billions of dollars. Since 2003, GAO’s audits have helped generate more than $500 billion and bring about 17,000 program efficiency reforms, according to Comptroller General Gene Dodaro, who said GAO tries to follow up on its suggestions. “This year GAO sent letters to the heads of key executive branch agencies identifying unimplemented recommendations that warrant priority attention,” Dodaro said, according to Government Executive.

Suggestions about information technology expenditures have also been ignored. A report earlier this year stated: “Over the last six years, GAO made about 800 recommendations to OMB [Office of Management and Budget] and agencies to improve acquisition and operations of IT,” according to Sputnik. “As of October 2015, about 32 percent of these had been implemented.”